以校验系数的概念为切入点,详细分析了校验系数的影响因素;通过对不同规范和文献中校验系数参考值的对比,发现不同规范和文献对其规定很不一致,体现了现行公路桥梁检测规范不尽完善和科学。基于多座城市高架桥的荷载试验,应用数理统计方法归纳出了新建预应力混凝土简支板梁桥、T梁桥及连续钢箱梁桥的应力和挠度校验系数的常值范围。为完善我国城市高架桥的承载力评定规范和科学完成桥梁检测工程提供参考。%In the light of the concept of test coefficients,the influential factors of test coefficients are analyzed in detail in the paper.After the reference values of test coefficients in different technical specifications and literature are compared,it is found that they are notably not in agreement with each other,which reflects that the existing criterion of inspection and evaluation for highway bridges are imperfect and unscientific.Upon the basis of the load tests of many urban viaducts,the constant range of the test coefficients of stress and deflection for newly-built pre-stressed concrete simply-supported plate girder,T-beam and continuous steel box bridges are summed up by the method of mathematical statistics in the paper.It provides a useful reference for perfecting the evaluation criteria of bearing capacity for urban viaducts in our country and completing bridge-testing projects scientifically.
展开▼
